Buffel grass Emphasis Type="Italic"Cenchrus cil

Authors: Ulises MacíasCruz Juan A QuinteroElisea Leonel AvendañoReyes Abelardo CorreaCalderón Francisco D ÁlvarezValenzuela S A SotoNavarro F A LuceroMagaña Arnoldo GonzálezReyna

Publish Date: 2009/08/09

Volume: 42, Issue: 2, Pages: 223-232

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Abstract

Twenty Dorper x Pelibuey male lambs were used to evaluate the effect of substitution of forage with fresh orange pulp FOP in diets for fattening lambs on productive behavior nutrient intake apparent digestibility coefficient and feeding costs Lambs were divided into five groups n = 4 and then housed in individual pens during 70 d Treatments consisted of five levels of FOP 0 25 50 75 and 100 which substituted buffel grass hay on the base diet 4060 forageconcentrate Additionally changes in chemical composition of FOP stored in stack during 8 d were evaluated from the day 1 until day 8 Daily feed intake expressed as kg/day and live weight lamb growth rate feeding cost of each lamb per day and per fattening period hemicellulose intake and DM OM CP NDF and hemicellulose digestibility showed a quadratic effect P  005 while DM OM and CP intake presented a cubic effect P  005 with the increasing level of FOP The maximum estimated value for those variables was observed at 75 of hay replacement with FOP With respect to changes in chemical composition of pulp stored DM content increased P = 00011 from 210 to 310 g/kg FOP and OM fiber fraction and ash content were constant P  005 among storage days Therefore replacing around 75 of buffel grass hay with FOP in diets for fattening lambs resulted in the best growth rate and more efficient diet utilization Fresh orange pulp stored in a stack did not change its chemical composition and did not affect its utilization as a sheep feedstuffThis research was financially supported by professor Arnoldo GonzálezReyna and the UAM of Agronomy and Science of the University Autonomous of Tamaulipas located in Ciudad Victoria Tamaulipas México In addition we acknowledge to MC Javier Hernández Meléndez MC Oscar Hernández Ruiz and Dr Pedro Zárate Fortuna for their technical help provided

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